The Uponor design guide shows running the supply (hotter) along the exterior walls 1st before moving toward center of room (heat loss is less).
Placing the tubes closer together has the same effect.
As I am doing constant circulation within each zone with an Outdoor Reset Injection controller, the floor temperatures within each zone will tend to even out, even with more heat loss along the exterior walls & doors.
My boiler is a gas cast iron Burnham 3-section (smallest made) & it will probably run at about a 50% duty cycle at Design Temp. (2*F)
The heat is buffered in a 79 gallon tank between boiler and floor system allowing long burn cycles.
|